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<h2><span class="refentrytitle">Type error_type</span></h2>
<p>boost::xpressive::regex_constants::error_type</p>
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<h2 class="refsynopsisdiv-title">Synopsis</h2>
<div class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../xpressive/reference.html#doxygen.regex__constants_8hpp" title="Header &lt;boost/xpressive/regex_constants.hpp&gt;">boost/xpressive/regex_constants.hpp</a>&gt;

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<span class="keyword">enum</span> <span class="identifier">error_type</span> <span class="special">{</span> <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa615320525c44d8602ff8b40220c50668">error_collate</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aaba0a701895736dc0483b7db4722f9997">error_ctype</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aae69b0589598a5db955c9c7f63eafeba3">error_escape</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa90fd455f0eed70e84684d91203b0806b">error_subreg</a>, 
                  <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa6eb4d4a076a530597b29ac19f1bbe698">error_brack</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa8123b763b6d6ad5ad589c3b6b4b5960e">error_paren</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aad54d81b2158b622dea66b810e28ed7c4">error_brace</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aaea163957d9757643637d24e3499d9779">error_badbrace</a>, 
                  <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa2666624a6689f92185787224c115a417">error_range</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa6ee913fa8f65587ab99424ceffae92ae">error_space</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa31cf6bbad6c7ea6b7fa2efacfb7685a2">error_badrepeat</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aaa9a91c43dfa4dcced12b4e5d5be12ed6">error_complexity</a>, 
                  <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa47cf9c8b07270fd4c2be198283d07ada">error_stack</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa70a88d85e3ddedc2d0c17ec9a6200b7c">error_badref</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa65dcbad831b78e11477a8edab8ea59fa">error_badmark</a>, 
                  <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa7877ceffb1e288fab2344db57e8d5bad">error_badlookbehind</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa0cb2fcb7c6a8b165cad38f77e1b13df3">error_badrule</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aacaf0d5384d774db09e16edd8ff3c3a63">error_badarg</a>, 
                  <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa762e6e94a4670bcd992344662fc80f49">error_badattr</a>, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594a.html#doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa12558e42021acbe551dfd6e643703788">error_internal</a> <span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id-1.3.44.5.7.6.4"></a><h2>Description</h2>
<p>Error codes used by the <a class="link" href="structboost_1_1xpressive_1_1regex__error.html" title="Struct regex_error">regex_error</a> type </p>
<div class="variablelist"><dl class="variablelist compact">
<dt><span class="term"><code class="computeroutput">error_collate</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa615320525c44d8602ff8b40220c50668"></a></span></dt>
<dd><p>The expression contained an invalid collating element name. </p></dd>
<dt><span class="term"><code class="computeroutput">error_ctype</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aaba0a701895736dc0483b7db4722f9997"></a></span></dt>
<dd><p>The expression contained an invalid character class name. </p></dd>
<dt><span class="term"><code class="computeroutput">error_escape</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aae69b0589598a5db955c9c7f63eafeba3"></a></span></dt>
<dd><p>The expression contained an invalid escaped character, or a trailing escape. </p></dd>
<dt><span class="term"><code class="computeroutput">error_subreg</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa90fd455f0eed70e84684d91203b0806b"></a></span></dt>
<dd><p>The expression contained an invalid back-reference. </p></dd>
<dt><span class="term"><code class="computeroutput">error_brack</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa6eb4d4a076a530597b29ac19f1bbe698"></a></span></dt>
<dd><p>The expression contained mismatched [ and ]. </p></dd>
<dt><span class="term"><code class="computeroutput">error_paren</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa8123b763b6d6ad5ad589c3b6b4b5960e"></a></span></dt>
<dd><p>The expression contained mismatched ( and ). </p></dd>
<dt><span class="term"><code class="computeroutput">error_brace</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aad54d81b2158b622dea66b810e28ed7c4"></a></span></dt>
<dd><p>The expression contained mismatched { and }. </p></dd>
<dt><span class="term"><code class="computeroutput">error_badbrace</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aaea163957d9757643637d24e3499d9779"></a></span></dt>
<dd><p>The expression contained an invalid range in a {} expression. </p></dd>
<dt><span class="term"><code class="computeroutput">error_range</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa2666624a6689f92185787224c115a417"></a></span></dt>
<dd><p>The expression contained an invalid character range, for example [b-a]. </p></dd>
<dt><span class="term"><code class="computeroutput">error_space</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa6ee913fa8f65587ab99424ceffae92ae"></a></span></dt>
<dd><p>There was insufficient memory to convert the expression into a finite state machine. </p></dd>
<dt><span class="term"><code class="computeroutput">error_badrepeat</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa31cf6bbad6c7ea6b7fa2efacfb7685a2"></a></span></dt>
<dd><p>One of *?+{ was not preceded by a valid regular expression. </p></dd>
<dt><span class="term"><code class="computeroutput">error_complexity</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aaa9a91c43dfa4dcced12b4e5d5be12ed6"></a></span></dt>
<dd><p>The complexity of an attempted match against a regular expression exceeded a pre-set level. </p></dd>
<dt><span class="term"><code class="computeroutput">error_stack</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa47cf9c8b07270fd4c2be198283d07ada"></a></span></dt>
<dd><p>There was insufficient memory to determine whether the regular expression could match the specified character sequence. </p></dd>
<dt><span class="term"><code class="computeroutput">error_badref</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa70a88d85e3ddedc2d0c17ec9a6200b7c"></a></span></dt>
<dd><p>An nested regex is uninitialized. </p></dd>
<dt><span class="term"><code class="computeroutput">error_badmark</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa65dcbad831b78e11477a8edab8ea59fa"></a></span></dt>
<dd><p>An invalid use of a named capture. </p></dd>
<dt><span class="term"><code class="computeroutput">error_badlookbehind</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa7877ceffb1e288fab2344db57e8d5bad"></a></span></dt>
<dd><p>An attempt to create a variable-width look-behind assertion was detected. </p></dd>
<dt><span class="term"><code class="computeroutput">error_badrule</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa0cb2fcb7c6a8b165cad38f77e1b13df3"></a></span></dt>
<dd><p>An invalid use of a rule was detected. </p></dd>
<dt><span class="term"><code class="computeroutput">error_badarg</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aacaf0d5384d774db09e16edd8ff3c3a63"></a></span></dt>
<dd><p>An argument to an action was unbound. </p></dd>
<dt><span class="term"><code class="computeroutput">error_badattr</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa762e6e94a4670bcd992344662fc80f49"></a></span></dt>
<dd><p>Tried to read from an uninitialized attribute. </p></dd>
<dt><span class="term"><code class="computeroutput">error_internal</code><a name="doxygen.namespaceboost_1_1xpressive_1_1regex__constants_1a72b1fa97b4db010bdf2ecaa8d380594aa12558e42021acbe551dfd6e643703788"></a></span></dt>
<dd><p>An internal error has occurred. </p></dd>
</dl></div>
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